The Judith Rosen Collection consists of unpublished recordings of performances, lectures, and radio programs concerning classical music, focusing on twentieth century composition, as well as women musicians and composers.

Papers and recordings from American conductor and composer Gerhard Samuel (1924-2008), particularly from his years conducting the Oakland Symphony, Minneapolis Symphony, and University of Cincinnati Philharmonia Orchestra.

The James Schwabacher Collection consists of sound recordings, correspondence, scores, scrapbooks, clippings, programs, teaching material and other papers from San Francisco philanthropist and lyric tenor James Schwabacher.